Home / 493,507.20-681,080.16-278,699.52

Finding the Fourth Proportional to 493,507.20, 681,080.16 and 278,699.52

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Solution

The fourth proportional to 493,507.20, 681,080.16 and 278,699.52 is: 384,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,507.20 : 681,080.16 = 278,699.52 : x
  2. Step 2: Convert to fraction form
    493,507.20/681,080.16 = 278,699.52/x
  3. Step 3: Cross multiply
    493,507.20x = 681,080.16 × 278,699.52
  4. Step 4: Simplify right side
    493,507.20x = 189,816,713,673.52
  5. Step 5: Solve for x
    x = 189,816,713,673.52/493,507.20
  6. Step 6: Final answer
    x = 384,628.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.